Universal compatibility Fits most surf boards and a wide range of water sports boards, including longboards, shortboards, wakeboards, paddleboards and leisure boards. Compatible with American fin boxes. Suitable for both inflatable and hard backing boards. Durable protection Made from high quality TPU material with wear and oil resistance. Transparent and flexible design delivers long lasting durability and protects against damage during use. Superior performance Delivers reliable performance in shallow water. The flexible fin design reduces the risk of damaging the fin box when it comes into contact with hard surfaces, thanks to a safety oriented design. Wide applications Equipped with a hard backing board and compatibility with American fin boxes. Practical for inflatable and hard backing boards, enabling effortless maneuvering and strong adaptability. Use scenarios - Cruising on a longboard or paddleboard in shallow coastal or river waters, with safer fin box interaction. - Upgrading an inflatable paddleboard for calm lake or river trips, improving tracking and maneuverability. - Riding a shortboard or wakeboard in light chop, where the flexible fin helps protect the fin box during occasional contact.